计算圆形的直径和半径的公式 圆的半径计算公式
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3.\u5728\u540c\u4e00\u5e73\u9762\u5185\uff0c\u5230\u5b9a\u70b9\u7684\u8ddd\u79bb\u7b49\u4e8e\u5b9a\u957f\u7684\u70b9\u7684\u96c6\u5408\u53eb\u505a\u5706\u3002\u5706\u53ef\u4ee5\u8868\u793a\u4e3a\u96c6\u5408{M||MO|=r},\u5706\u7684\u6807\u51c6\u65b9\u7a0b\u662f(x - a) ² + (y - b) ² = r ²\u3002\u5176\u4e2d\uff0c(a , b)\u662f\u5706\u5fc3\uff0cr \u662f\u534a\u5f84\u3002\u5706\u5f62\u662f\u4e00\u79cd\u5706\u9525\u66f2\u7ebf\uff0c\u7531\u5e73\u884c\u4e8e\u5706\u9525\u5e95\u9762\u7684\u5e73\u9762\u622a\u5706\u9525\u5f97\u5230\u3002
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直径=2x半径；面积=πx半径²；周长=πx直径=2xπx半径。
绛旓細鍥炵瓟锛鐩村緞绛変簬2鍊鍗婂緞
绛旓細鍦嗙殑鍗婂緞=鍦嗗懆闀棵废梅2 =鍦嗙洿寰梅2 锛侊紒锛!鍙傝冭祫鏂欙細甯屾湜閲囩撼鎴戠殑绛旀
绛旓細鐩村緞=鍗婂緞脳2 鍏紡涓篸=2r锛屽崐寰=鐩村緞梅2 鍏紡涓簉= d梅2锛鍦嗙殑鍛ㄩ暱=鍦嗗懆鐜嚸楃洿寰 鍏紡涓篶=蟺d =2蟺r锛屽渾鐨勯潰绉=鍗婂緞脳鍗婂緞脳蟺 鍏紡涓篠=蟺rr銆傚湪涓涓钩闈㈠唴锛屼竴鍔ㄧ偣浠ヤ竴瀹氱偣涓轰腑蹇冿紝浠ヤ竴瀹氶暱搴︿负璺濈鏃嬭浆涓鍛ㄦ墍褰㈡垚鐨勫皝闂洸绾垮彨鍋氬渾銆傚渾鏈夋棤鏁版潯瀵圭О杞淬傚湪鍚屼竴骞抽潰鍐咃紝鍒板畾鐐圭殑璺濈绛変簬...
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绛旓細鍦嗙殑鐩村緞=鍗婂緞脳2濡傛灉娌″憡璇夊崐寰勫憡璇変簡鍛ㄩ暱锛岄偅灏辩敤鍛ㄩ暱闄や互3.14
绛旓細鍦嗙殑鍛ㄩ暱鍏紡锛氬渾鐨勫懆闀緾 = 蟺 X 鐩村緞 = 蟺 X 鍗婂緞 X 2 锛埾=3.14锛夊綋鍦嗙殑鐩村緞涓50鏃禨=3.14X 50= 157 閫氬父鐢ㄥ渾瑙勬潵鐢诲渾銆 鍚屽渾鍐呭渾鐨勭洿寰勩佸崐寰勯暱搴︽案杩滅浉鍚岋紝鍦嗘湁鏃犳暟鏉″崐寰勫拰鏃犳暟鏉＄洿寰勩傚渾鏄酱瀵圭О銆佷腑蹇冨绉板浘褰傚绉拌酱鏄洿寰勬墍鍦ㄧ殑鐩寸嚎銆傚渾褰竴鍛ㄧ殑闀垮害锛屽氨鏄渾鐨勫懆闀裤傝兘澶...
绛旓細鍦嗙殑鍗婂緞鏈変袱绉嶆柟娉曡繘琛璁＄畻 宸辩煡鍛ㄩ暱绠楀崐寰锛岀敱浜嶤锛2鍏r r锛滳锛2鍏 宸辩煡闈㈢Н绠楃洿寰锛孲锛濆厐R锛2 R锛濃垰锛圫锛忓厐锛
绛旓細宸茬煡鍦嗗舰闈㈢Н锛鍗婂緞=鈭氾紙S/蟺锛鐩村緞=2鈭氾紙S/蟺锛
绛旓細鍦嗗叕寮鍏ㄩ儴锛1銆佸渾闈㈢Н锛歋=蟺r锛孲=蟺(d/2)锛坉涓鐩村緞锛宺涓鍗婂緞锛夈2銆佸崐鍦嗙殑闈㈢Н锛歋鍗婂渾=(蟺r^2)/2銆3銆鍦嗙殑鍛ㄩ暱锛欳=2蟺r鎴朿=蟺d銆4銆佸崐鍦嗙殑鍛ㄩ暱锛歞+(蟺d)/2鎴栬卍+蟺r銆5銆佹墖褰㈡墍鍦ㄥ渾鐨勯潰绉櫎浠360鍐嶄箻浠ユ墖褰㈠渾蹇冭鐨勮搴锛歋=n/360脳蟺r銆傛ц川锛氬湪涓涓钩闈㈠唴锛屽洿缁曚竴涓偣骞...
